Method for Determining Identity: Mass Spectrometry: M = 345.48 +/-1Carbon-13 NMR: Conforms to structureProton NMR: Conforms to structureTLC Conditions:n-Butanol/Acetic acid/H2O (4:1:1); impurities ≤ 3% Chloroform/Methanol/Acetic acid (120:10:5); impurities: ≤ 3%Storage and Stability:Store at 4°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap.